@@ -69,6 +69,11 @@ acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc,
void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc);
+acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc);
+
+acpi_status
+acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc, char *signature);
+
u8 acpi_tb_is_table_loaded(u32 table_index);
void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded);
@@ -96,9 +101,6 @@ acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc);
void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc);
-acpi_status
-acpi_tb_verify_table(struct acpi_table_desc *table_desc, char *signature);
-
void acpi_tb_override_table(struct acpi_table_desc *old_table_desc);
acpi_status
@@ -322,7 +322,39 @@ void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
/******************************************************************************
*
- * FUNCTION: acpi_tb_verify_table
+ * FUNCTION: acpi_tb_validate_temp_table
+ *
+ * PARAMETERS: table_desc - Table descriptor
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to validate the table, the returned
+ * table descriptor is in "VALIDATED" state.
+ *
+ *****************************************************************************/
+
+acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc)
+{
+
+ if (!table_desc->pointer && !acpi_gbl_verify_table_checksum) {
+ /*
+ * Only validates the header of the table.
+ * Note that Length contains the size of the mapping after invoking
+ * this work around, this value is required by
+ * acpi_tb_release_temp_table().
+ * We can do this because in acpi_init_table_descriptor(), the Length
+ * field of the installed descriptor is filled with the actual
+ * table length obtaining from the table header.
+ */
+ table_desc->length = sizeof(struct acpi_table_header);
+ }
+
+ return (acpi_tb_validate_table(table_desc));
+}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_tb_verify_temp_table
*
* PARAMETERS: table_desc - Table descriptor
* signature - Table signature to verify
@@ -335,15 +367,15 @@ void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
*****************************************************************************/
acpi_status
-acpi_tb_verify_table(struct acpi_table_desc *table_desc, char *signature)
+acpi_tb_verify_temp_table(struct acpi_table_desc * table_desc, char *signature)
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE(tb_verify_table);
+ ACPI_FUNCTION_TRACE(tb_verify_temp_table);
/* Validate the table */
- status = acpi_tb_validate_table(table_desc);
+ status = acpi_tb_validate_temp_table(table_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
@@ -360,17 +392,22 @@ acpi_tb_verify_table(struct acpi_table_desc *table_desc, char *signature)
/* Verify the checksum */
- status =
- acpi_tb_verify_checksum(table_desc->pointer, table_desc->length);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
- "%4.4s " ACPI_PRINTF_UINT
- " Attempted table install failed",
- acpi_ut_valid_acpi_name(table_desc->signature.
- ascii) ? table_desc->
- signature.ascii : "????",
- ACPI_FORMAT_TO_UINT(table_desc->address)));
- goto invalidate_and_exit;
+ if (acpi_gbl_verify_table_checksum) {
+ status =
+ acpi_tb_verify_checksum(table_desc->pointer,
+ table_desc->length);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
+ "%4.4s " ACPI_PRINTF_UINT
+ " Attempted table install failed",
+ acpi_ut_valid_acpi_name(table_desc->
+ signature.
+ ascii) ?
+ table_desc->signature.ascii : "????",
+ ACPI_FORMAT_TO_UINT(table_desc->
+ address)));
+ goto invalidate_and_exit;
+ }
}
return_ACPI_STATUS(AE_OK);
@@ -194,7 +194,7 @@ acpi_tb_install_fixed_table(acpi_physical_address address,
/* Validate and verify a table before installation */
- status = acpi_tb_verify_table(&new_table_desc, signature);
+ status = acpi_tb_verify_temp_table(&new_table_desc, signature);
if (ACPI_FAILURE(status)) {
goto release_and_exit;
}
@@ -266,7 +266,7 @@ acpi_tb_install_standard_table(acpi_physical_address address,
/* Validate and verify a table before installation */
- status = acpi_tb_verify_table(&new_table_desc, NULL);
+ status = acpi_tb_verify_temp_table(&new_table_desc, NULL);
if (ACPI_FAILURE(status)) {
goto release_and_exit;
}
@@ -424,7 +424,7 @@ finish_override:
/* Validate and verify a table before overriding */
- status = acpi_tb_verify_table(&new_table_desc, NULL);
+ status = acpi_tb_verify_temp_table(&new_table_desc, NULL);
if (ACPI_FAILURE(status)) {
return;
}
@@ -446,7 +446,7 @@ finish_override:
acpi_tb_init_table_descriptor(old_table_desc, new_table_desc.address,
new_table_desc.flags,
new_table_desc.pointer);
- acpi_tb_validate_table(old_table_desc);
+ acpi_tb_validate_temp_table(old_table_desc);
/* Release the temporary table descriptor */
@@ -395,10 +395,6 @@ next_table:
table_entry += table_entry_size;
}
- /*
- * It is not possible to map more than one entry in some environments,
- * so unmap the root table here before mapping other tables
- */
acpi_os_unmap_memory(table, length);
return_ACPI_STATUS(AE_OK);
@@ -162,6 +162,15 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_create_osi_method, TRUE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_use_default_register_widths, TRUE);
/*
+ * Whether or not to verify the table checksum before installation. Set
+ * this to TRUE to verify the table checksum before install it to the table
+ * manager. Note that enabling this option causes errors to happen in some
+ * OSPMs during early initialization stages. Default behavior is to do such
+ * verification.
+ */
+ACPI_INIT_GLOBAL(u8, acpi_gbl_verify_table_checksum, TRUE);
+
+/*
* Optionally enable output from the AML Debug Object.
*/
ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_aml_debug_object, FALSE);